One can steal ideas, but no one can steal execution or passion.
Excitement is the more practical synonym for happiness, and it is precisely what you should strive to chase. It is the cure-all. When people suggest you follow your "passion" or your "bliss," I propose that they are, in fact, referring to the same singular concept: excitement. This brings us full circle. The question you should be asking isn't, "What do I want?" or "What are my goals?" but "What would excite me?"
Converting your own passions into a job is the fastest method for eliminating any passion you once had.